TW201932524A - Polyolefin film for out-mold decoration and method for manufacturing the same, and composite structure for out-mold decoration - Google Patents

Abstract

The present invention provides a polyolefin film for out-mold decoration and a method for manufacturing the same, and a composite structure for out-mold decoration. The polyolefin film is made from a composition including 100 parts by weight of polypropylene resin, 1 to 100 parts by weight of a functional resin, 1 to 50 parts by weight of a filler and 0.1 to 50 parts by weigh of an additive. The polypropylene resin has a melt index of from 3 to 20. By selecting components with specific melt index, the polyolefin film for out-mold decoration can have desired properties for out-mold decoration processes.

Description

Polyolefin film for out-of-mold transfer, manufacturing method thereof, and composite structure for out-of-mold transfer

The invention relates to a polyolefin film, a method for manufacturing the same, and a composite structure including the polyolefin film, and in particular, to a polyolefin film for out-of-mold transfer, a method for manufacturing the same, and a composite structure for out-of-mold transfer.

Out-of-mold transfer (also known as Out-Mold Decoration, OMD) is an extension of In-Mold Decoration (IMD) technology. The out-of-mold transfer technology mainly includes transferring the pattern or printing layer of the transfer film to the surface of various finished products under high pressure and vacuum conditions to form a decorative layer. Therefore, the out-of-mold transfer can also be called high-pressure vacuum transfer. The transfer film used in the out-of-mold transfer technology can be divided into two types: Out-Mold Release (OMR) and Out-Mold Forming (OMF). Compared with traditional spraying technology and in-mold decoration technology, out-of-mold transfer can be well applied to products with highly curved surfaces or sharp angles and to various materials, and has low process pollution, short process time, low cost and good quality. High rate and other advantages, so it has become a highly competitive market decoration technology.

In the prior art, a plastic material mainly composed of polyethylene terephthalate (PET) is generally used to manufacture a transfer film. However, PET has poor temperature resistance and cannot be used in the manufacturing process of high-temperature heating molding. In addition, the hardness of PET is high, so when it is applied to the surface of a product with a large curvature or a corner of a product, it is easy to crack.

Therefore, in the prior art, for the transfer film used for the out-of-mold transfer technology, How to ensure the delicateness of the transfer effect and improve the yield of the process while taking into account both the simplicity of the process and the cost considerations is still a problem to be improved in this field.

The technical problem to be solved by the present invention is to provide a polyolefin film for out-of-mold transfer, a method for manufacturing the same, and a composite structure for out-of-mold transfer to overcome the problems to be improved.

In order to solve the above technical problems, one of the technical solutions adopted by the present invention is to provide a polyolefin film for out-of-mold transfer, which is formed of a composition for out-of-mold transfer, which is used for out-of-mold transfer. The composition includes 100 parts by weight of a polypropylene resin, 1 to 100 parts by weight of a functional resin, 1 to 50 parts by weight of a filler, and 0.1 to 50 parts by weight of an additive, wherein the polypropylene resin has Melt index between 3 and 20 g / 10 min.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a method for manufacturing a polyolefin film for out-of-mold transfer, which includes: kneading and gelling a composition for out-of-mold transfer to form A gelatinized material, and calendering the gelatinized material to form the polyolefin film for out-of-mold transfer. The composition for out-of-mold transfer includes 100 parts by weight of a polypropylene resin, 1 to 100 parts by weight of a functional resin, 1 to 50 parts by weight of a filler, and 0.1 to 50 parts by weight of an additive, and The polypropylene resin has a melt index between 3 and 20 g / 10 min.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a composite structure for out-of-mold transfer, which includes a polyolefin film for out-of-mold transfer, an adhesive layer, and is disposed on the mold. A release layer is formed between the polyolefin film for external transfer and the adhesive layer. The polyolefin film for out-of-mold transfer is formed of a composition for out-of-mold transfer, and the composition for out-of-mold transfer includes 100 parts by weight of a polypropylene resin and 1 to 100 parts by weight of a functionality Resin, 1 to 50 parts by weight of a filler, and 0.1 to 50 parts by weight of an additive, and the polypropylene resin has a melt index between 3 to 20 g / 10 min.

One of the beneficial effects of the present invention is that it is used for out-of-mold transfer provided by the present invention. Polyolefin film, manufacturing method thereof, and composite structure for out-of-mold transfer, which can pass "out-of-mold transfer composition contains 100 parts by weight of polypropylene resin, 1 to 100 parts by weight of a functional resin, 1 to 50 A technical solution of "a filler in parts by weight and an additive in an amount of 0.1 to 50 parts by weight, and the polypropylene resin having a melt index between 3 to 20 g / 10 min", so that the polyolefin film for out-of-mold transfer It can be well applied to the composite structure for out-of-mold transfer, and can improve the three-dimensional coating on the product produced by the out-of-mold transfer manufacturing method, thereby improving the quality of the product.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description, and are not intended to limit the present invention.

S‧‧‧ Composite structure for out-of-mold transfer

1‧‧‧Polyolefin film for out-of-mold transfer

2‧‧‧ release layer

3‧‧‧ Adhesive layer

4‧‧‧ primer layer

5‧‧‧hard coating

6‧‧‧print layer

FIG. 1 is a flowchart of a method for manufacturing a polyolefin film for out-of-mold transfer provided in an embodiment of the present invention; FIG. 2 is a schematic diagram of one embodiment of a composite structure for out-of-mold transfer provided in an embodiment of the present invention; and FIG. 3 is a schematic diagram of another embodiment of a composite structure for out-of-mold transfer provided by an embodiment of the present invention.

The following are specific embodiments to explain the embodiments of the present invention regarding "polyolefin film for out-of-mold transfer, its manufacturing method, and composite structure for out-of-mold transfer". Those skilled in the art can be disclosed by this specification. To understand the advantages and effects of the present invention. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be based on different viewpoints and applications, and various modifications and changes can be made without departing from the concept of the present invention. In addition, the drawings of the present invention are merely a schematic illustration, and are not drawn according to actual dimensions, and are stated in advance. The following embodiments will further describe the related technical content of the present invention in detail, but the disclosed content is not intended to limit the protection scope of the present invention.

The present invention provides a polyolefin film for out-of-mold transfer, which is formed of a composition for out-of-mold transfer. Specifically, the composition for out-of-mold transfer used in the present invention includes 100 parts by weight of a polypropylene resin, 1 to 100 parts by weight of a functional resin, 1 to 50 parts by weight of a filler, and 0.1 to 50 parts by weight. Additives. In the embodiment of the present invention, the composition for out-of-mold transfer is a polypropylene resin in which a functional resin, a filler and an additive are used in combination to impart desired characteristics to the produced polyolefin film for out-of-mold transfer.

For example, the polypropylene resin used in the composition for out-of-mold transfer of the present invention may have a Melt Flow Index (MFI) between 3 and 20 g / 10 min. In the embodiment of the present invention, a polypropylene resin having a low melting point and good ductility may be selected. The melting point of the polypropylene resin may be between 130 and 155 ° C.

In the embodiment of the present invention, the functional resin is used as a modifier, and may be a resin having excellent ductility and a low melting point, such as a high-density polyethylene having a melt index between 0.3 to 30 g / 10 min ( HDPE), linear low density polyethylene (LLDPE), or low density polyethylene (LDPE) with a melt index between 0.3 and 30 g / 10 min. In one embodiment, the functional resin may include a mixture of two or more kinds of the above-mentioned polyethylene resins. However, the invention is not limited to the examples given above.

For example, the functional resin may include 1 to 50 parts by weight of high density polyethylene, 1 to 100 parts by weight of linear low density polyethylene, or 1 to 100 parts by weight of low density polyethylene. It is worth mentioning that high-density polyethylene may not be included in the functional resin, that is, the amount of high-density polyethylene may be zero. The use of the functional resin as a component of the composition for out-of-mold transfer can make the produced polyolefin film for out-of-mold transfer have good ductility and can cover the surface of the target product well. In other words, by using the functional resin, the produced polyolefin film for out-of-mold transfer can have desired soft hardness. At the same time, through the selection of the functional resin, the prepared polyolefin film for out-of-mold transfer can have a desired transparency and is advantageous for positioning transfer.

In addition, the type and characteristics of the functional resin can be selected according to the operating temperature of the out-of-mold transfer technology. Specifically, when performing the out-of-mold transfer processing sequence, heating molding can be roughly divided into low-temperature molding (temperature is about 90 ° C to 110 ° C) and high-temperature molding (temperature is about 110 ° C to 130 ° C). When low-temperature molding is used for out-of-mold transfer processing, the functional resin in the out-of-mold transfer composition can be selected from 1 to 50 parts by weight of high-density polyethylene and 30 to 100 parts by weight of linear low-density polyethylene. 30 to 100 parts by weight of low density polyethylene or any combination thereof. In addition, when high-temperature molding is used for the out-of-mold transfer processing, the functional resin in the out-of-mold transfer composition can be selected from 1 to 30 parts by weight of high-density polyethylene and 1 to 30 parts by weight of linear low density. Polyethylene, 1 to 30 parts by weight of low density polyethylene, or any combination thereof.

In the composition for out-of-mold transfer of the polyolefin film for out-of-mold transfer provided in the embodiment of the present invention, the filler may be glass fiber, asbestos fiber, carbon fiber, boron fiber, mica, silica, talc, silicon One or more of acid salts, calcium carbonate, metal oxides, and carbon black. The use of fillers can make the polyolefin film for out-of-mold transfer have higher strength and hardness, or can improve its scratch resistance or heat resistance. In addition, the additive may be a light stabilizer, an ultraviolet absorber, an ethylene vinyl acetate copolymer (EVA), or a vinyl olefin copolymer elastomer. In the present invention, the types of fillers and additives are not limited here, and can be selected and adjusted on the premise that the desired characteristics of the polyolefin film for out-of-mold transfer are achieved.

In the present invention, the composition for out-of-mold transfer can be kneaded and kneaded by a kneader, and the gelatinized material can be calendered by a calender (Calender, also known as a blanket machine) to form a polymer for out-of-mold transfer. Olefin film. Specifically, the use of a calender to calender the gelled material formed from the composition for out-of-mold transfer contributes to the excellent properties of the polyolefin film for out-of-mold transfer that is subsequently produced. Next, referring to FIG. 1, a method for manufacturing a polyolefin film for out-of-mold transfer will be described in detail below. The physical characteristics of the polyolefin film for out-of-mold transfer will be described later.

As shown in FIG. 1, the manufacturing method of the polyolefin film for out-of-mold transfer provided in the embodiment of the present invention includes: kneading and gelling the composition for out-of-mold transfer to form gelation (Step S100); and calendering the gelatinized material to form a polyolefin film for out-of-mold transfer (step S102).

As described above, the composition for out-of-mold transfer used in step S100 may be the aforementioned polypropylene resin containing 100 parts by weight, 1 to 100 parts by weight of a functional resin, 1 to 50 parts by weight of a filler, and 0.1. To 50 parts by weight of an additive for a composition for out-of-mold transfer. In other words, the types and proportions of the components in the composition for out-of-mold transfer are as described previously.

In the embodiment of the present invention, in step S100, various components in the composition for out-of-mold transfer can be mixed, kneaded, and gelatinized by a kneader, thereby forming a gelatinized material. Next, in step S102, the gelatinized material can be calendered by a calender to produce a sheet-shaped material. After the gelatinized material is calendered, the calendered sheet-like material may be further subjected to steps such as stretching, embossing, and surface treatment. For example, by embossing the sheet material, at least one surface of the formed polyolefin film for out-of-mold transfer can have a three-dimensional pattern (e.g., texture such as hairline, Carbon fiber pattern, etc.). In one embodiment of the present invention, the polyolefin film for out-of-mold transfer is a material layer subjected to a corona treatment.

In addition, after forming the polyolefin film for out-of-mold transfer, the polyolefin film for out-of-mold transfer and other layered materials can be combined with each other to form a composite structure for out-of-mold transfer. Details of the composite structure for out-of-mold transfer provided by the embodiment of the present invention will be described later.

Next, the characteristics of the polyolefin film for out-of-mold transfer provided in the examples of the present invention will be described. Specifically, the following characteristics are related to the selection and ratio of the components of the composition for out-of-mold transfer. In the present invention, a polyolefin film for out-of-mold transfer having the following characteristics can be obtained by appropriately adjusting the components and related characteristics (for example, melt index) of the composition for out-of-mold transfer.

As mentioned above, by using the above-mentioned composition for out-of-mold transfer, the polyolefin film for out-of-mold transfer provided in the embodiment of the present invention can have a longitudinal stretch of at least 4000 psi. Strength and a transverse tensile strength of at least 3000 psi, and a longitudinal elongation between 600 and 950% and a lateral elongation between 400 and 900%. In one embodiment, the polyolefin film for out-of-mold transfer may have a longitudinal tensile strength of at least 6000 psi and a transverse tensile strength of 4500 psi or more. Specifically, the polyolefin film for out-of-mold transfer having the above-mentioned characteristics has excellent mechanical strength and ductility. In this way, when high-pressure vacuum transfer is performed at a high temperature, it can ensure that the corners of the product are not transferred. The film is broken.

In addition, in one of the embodiments, the polyolefin film for out-of-mold transfer provided in the examples of the present invention has a surface tension of at least 34 dyne / cm. In fact, when applying a polyolefin film for out-of-mold transfer to an out-of-mold transfer processing sequence, it is generally necessary to combine the polyolefin film for out-of-mold transfer with other structural layers, such as a primer layer. While using. Accordingly, a polyolefin film for out-of-mold transfer having a relatively high surface tension (for example, a surface tension of at least 34 dyne / cm) can provide good adhesion between the polyolefin film and the primer layer.

In addition, the polyolefin film for out-of-mold transfer provided in the embodiments of the present invention may also have a surface roughness within a specific range according to the requirements of the product. For example, depending on the desired pattern of the product surface, the type and proportion of additives in the composition for out-of-mold transfer can be adjusted, or the out-of-mold transfer can be imparted by embossing or surface treatment steps in the manufacturing method. Polyolefin film with different surface roughness. In the embodiment of the present invention, the polyolefin film for out-of-mold transfer may have a surface roughness (ER) between 10 and 30 and a surface roughness (GR) between 25 and 60. Surface roughness (ER) represents the surface roughness of the surface of the polyolefin film for out-of-mold transfer used to contact the embossed steel wheel, that is, the surface is the embossed steel wheel treated surface. Alternatively, the treatment surface of the embossed steel wheel may be a surface for contacting the primer layer. In addition, the surface roughness (GR) refers to the surface roughness of the embossed rubber surface. In addition, the gloss of the surface of the polyolefin film for out-of-mold transfer can also be adjusted according to the filler or additive used.

The polyolefin film for out-of-mold transfer provided by the embodiment of the present invention may have a thickness between 0.08 and 0.2 mm, and a ratio between 0.9 and 1.0. weight. In one embodiment of the present invention, the polyolefin film for out-of-mold transfer used for low-temperature transfer has a thickness of about 0.15 mm and a specific gravity between 0.905 and 0.965. In another embodiment of the present invention, the polyolefin film for out-of-mold transfer used for high-temperature transfer has a thickness of about 0.15 mm and a specific gravity between 0.93 and 0.99.

In order to facilitate the adhesion of a transfer film (including a polyolefin film for out-of-mold transfer and other layered materials) to the surface of the product during out-of-mold transfer processing, a polyolefin film for out-of-mold transfer is preferred It has a transparent appearance. For example, the polyolefin film for out-of-mold transfer may have a transmittance of 85% or more.

Next, please refer to FIG. 2 and FIG. 3. FIG. 2 is a schematic diagram of one embodiment of a composite structure for out-of-mold transfer provided in an embodiment of the present invention, and FIG. 3 is a schematic diagram of another embodiment of a composite structure for out-of-mold transfer provided by an embodiment of the present invention.

As shown in FIG. 2, the composite structure S for out-of-mold transfer provided by the embodiment of the present invention includes a polyolefin film 1 for out-of-mold transfer 1, an adhesive layer 3, and a polyolefin film 1 and an adhesion layer provided on the out-of-mold transfer 3. Between release layer 2. In the composite structure S for out-of-mold transfer provided in the embodiment of the present invention, the polyolefin film 1 for out-of-mold transfer may be formed of the above-mentioned composition for out-of-mold transfer. As described above, the composition for out-of-mold transfer contains 100 parts by weight of a polypropylene resin, 1 to 150 parts by weight of a functional resin, 1 to 50 parts by weight of a filler, and 1 to 50 parts by weight of an additive, and The polypropylene resin has a melt index between 3 and 20 g / 10 min.

In other words, the out-of-mold transfer polyolefin film 1 formed from the composition for out-of-mold transfer and / or the method for producing the out-of-mold transfer polyolefin film 1 may be formed by combining with another layered material. Composite structure S for out-of-mold transfer. In the composite structure S for out-of-mold transfer, the adhesive layer 3 is used to adhere to the processing surface of the target product, so that in the step of high-pressure vacuum transfer, the polyolefin film 1 for out-of-mold transfer 1 or other A layered material that imparts a pattern to the processed surface of the product is fixed to the processed surface of the product. For example, the adhesive layer 3 may be a Hot Melt Adhesive (HMA) layer. However, the invention does not limit the material of the adhesive layer 3.

In addition, the release layer 2 in the composite structure S for out-of-mold transfer is used to separate the polyolefin film 1 for out-of-mold transfer from the processed surface of the product after the step of performing high-pressure vacuum transfer. The separated polyolefin film 1 for out-of-mold transfer can also be reused in transfer procedures for other products.

Next, see Figure 3. Comparing FIG. 2 and FIG. 3, the main difference between the embodiment shown in FIG. 3 and the embodiment shown in FIG. 2 is that the composite structure S for out-of-mold transfer in FIG. 3 includes a large number of layered materials. In detail, in this embodiment, the composite structure S for out-of-mold transfer includes a polyolefin film for out-of-mold transfer 1, a release layer 2, an adhesive layer 3, a primer layer 4, a hard coat layer 5, and a printing layer. 6. The above-mentioned multiple layered materials will be further described below.

As mentioned above, the use and characteristics of the polyolefin film 1, the release layer 2, and the adhesive layer 3 for the out-of-mold transfer composite structure S shown in FIG. 3 are as described in the description of FIG. 2 previously. Described. A primer layer 2 may be further provided between the polyolefin film 1 for out-of-mold transfer and the release layer 2. The primer layer 2 (Primer Layer) can be an adhesive UV coating, and this layered material can be selected according to the needs of the product and the pattern or structure of the polyolefin film 1 for out-of-mold transfer. It is worth mentioning that, since the polyolefin film 1 for out-of-mold transfer provided in the embodiment of the present invention has a better surface tension, it can generate good adhesion with the primer layer 2.

In addition, as shown in FIG. 3, a hard coat layer 5 and a printing layer 6 may be further provided between the release layer 2 and the adhesive layer 3. For example, the Hard Coating Layer 5 may be an ultraviolet (UV) hardening resin, and it may be selected according to product requirements. In other words, the hard coat layer 5 is a selective layered material. The printing layer 6 may be used to retain (attach) the adhesive layer 3 on the processed surface of the product after performing the high-pressure vacuum transfer step, and to impart a pattern or color to the processed surface of the product. In other words, the simultaneous use of the polyolefin film 1 and the printing layer 6 in the composite structure S for out-of-mold transfer can make the processed surface of the product have a three-dimensional pattern (for example, embossing) and color. However, in the present invention, the material selection and related characteristics of the hard coat layer 5 and the print layer 6 are not limited, and can be adjusted according to actual needs.

The composite structure S for out-of-mold transfer provided in the embodiments of the present invention can impart a desired pattern to the processed surface of a product through a high-pressure transfer process. For example, the high-pressure transfer process may include the following steps: placing and fixing the composite structure S for out-of-mold transfer on the product processing surface; softening the composite structure S for out-of-mold transfer by heat; and processing that generates a vacuum and high pressure Environment; converting the processing environment of vacuum high pressure to negative pressure; performing transfer; and performing the steps of releasing the transfer film.

When the polyolefin film 1 for out-of-mold transfer provided in the embodiment of the present invention is used as the substrate of the composite structure S for out-of-mold transfer, the polyolefin film 1 for out-of-mold transfer contains a polypropylene resin and meets various environmental protection requirements. Requirements (such as EN-1, RoHs, and WEEE), and the polyolefin film 1 for out-of-mold transfer has excellent dimensional stability, temperature resistance, chemical resistance, printability, mechanical strength, and ductility, which can be avoided The processed surface of the product has orange peel and cracks at the corners during or after high pressure transfer.

Specific experimental examples

In the following, the polyolefin film 1 for out-of-mold transfer for low-temperature molding is taken as an example to show the characteristics obtained by testing the polyolefin film 1 for out-of-mold transfer provided by the present invention. Table 1 lists the characteristics of the polyolefin film 1 for out-of-mold transfer provided in the present invention for low-temperature molding applications, and the characteristics of the transfer film that have been tested and are well-suited for out-of-mold transfer products with acute angles. standard. From the contents of Table 1, it can be seen that the polyolefin film 1 for out-of-mold transfer provided by the present invention is well applicable to technical applications of out-of-mold transfer. In Table 1, the thickness of the polyolefin film 1 for out-of-mold transfer was 0.15 mm.

In the above table, MD indicates the longitudinal value and CD indicates the lateral value, and ER and GR represent the two opposite surfaces of the polyolefin film, respectively.

As mentioned above, the characteristics of the two types of polyolefin film 1 for out-of-mold transfer provided by the present invention for high-temperature molding applications are listed in Table 2 below, and they have been tested to be suitable for molds with sharp angles. Characteristic standards for external transfer products. The two types of polyolefin film 1 for out-of-mold transfer have different embossing. In Table 2, the thickness of the polyolefin film for out-of-mold transfer was also 0.15 mm.

[Advantageous Effects of the Embodiment]

One of the beneficial effects of the present invention is that the polyolefin film 1 for out-of-mold transfer provided by the present invention, the method for manufacturing the same, and the composite structure S for out-of-mold transfer can pass the "out-of-mold transfer composition comprising 100 Parts by weight of a polypropylene resin, 1 to 150 parts by weight of a functional resin, 1 to 50 parts by weight of a filler, and 1 to 50 parts by weight of an additive, and the polypropylene resin has a range of 3 to 20 g / The technical solution of "melting index between 10 minutes" makes the polyolefin film 1 for out-of-mold transfer 1 well applicable to the composite structure S for out-of-mold transfer and improves the three-dimensional coating precision of the out-of-mold transfer process. To improve product quality.

The contents disclosed above are only the preferred and feasible embodiments of the present invention, and therefore do not limit the scope of patent application of the present invention. Therefore, any equivalent technical changes made by using the description and drawings of the present invention are included in the application of the present invention. Within the scope of the patent.

Claims (10)

A polyolefin film for out-of-mold transfer is formed of a composition for out-of-mold transfer, the composition for out-of-mold transfer comprising 100 parts by weight of a polypropylene resin and 1 to 100 parts by weight of a The functional resin, 1 to 50 parts by weight of a filler, and 0.1 to 50 parts by weight of an additive, wherein the polypropylene resin has a melt index between 3 to 20 g / 10 min. The polyolefin film for out-of-mold transfer according to claim 1, wherein the functional resin includes at least one of a high-density polyethylene, a linear low-density polyethylene, and a low-density polyethylene, and The high density polyethylene has a melt index between 0.3 and 30. The polyolefin film for out-of-mold transfer according to claim 1, wherein the additives include a light stabilizer, an ultraviolet absorber, an ethylene vinyl acetate copolymer, and a vinyl olefin copolymer elastomer. At least one. The polyolefin film for out-of-mold transfer according to claim 1, wherein the polyolefin film for out-of-mold transfer has a longitudinal tensile strength of at least 4000 psi and a transverse tensile strength of at least 3000 psi. The polyolefin film for out-of-mold transfer according to claim 1, wherein the polyolefin film for out-of-mold transfer has a longitudinal elongation of between 600 and 950% and an elongation between 400 and 900. Transverse elongation. The polyolefin film for out-of-mold transfer according to claim 1, wherein the polyolefin film for out-of-mold transfer has a surface tension of at least 34 dyne / cm. A method for manufacturing a polyolefin film for out-of-mold transfer, comprising: mixing and gelling a composition for out-of-mold transfer to form a gelatinized material, wherein the composition for out-of-mold transfer includes 100 Parts by weight of a polypropylene resin, 1 to 100 parts by weight of a functional resin, 1 to 50 parts by weight of a filler, and 1 to 50 parts by weight of an additive, and the polypropylene resin has between 3 and 20 g Melt index between / 10min; and The gelatinized material is calendered to form the polyolefin film for out-of-mold transfer. The method for manufacturing a polyolefin film for out-of-mold transfer according to claim 7, wherein the functional resin includes at least one of a high-density polyethylene, a linear low-density polyethylene, and a low-density polyethylene . A composite structure for out-of-mold transfer includes: a polyolefin film for out-of-mold transfer; an adhesive layer; and a release layer, the release layer is disposed on the polyolefin film for out-of-mold transfer and Between the adhesive layers; wherein the polyolefin film for out-of-mold transfer is formed of a composition for out-of-mold transfer, and the composition for out-of-mold transfer includes 100 parts by weight of a polypropylene resin 1 to 100 parts by weight of a functional resin, 1 to 50 parts by weight of a filler and 0.1 to 50 parts by weight of an additive, and the polypropylene resin has a melt index between 3 to 20 g / 10 min . The composite structure for out-of-mold transfer according to claim 9, further comprising: a printing layer, the printing layer being disposed between the adhesive layer and the release layer.